<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        textarea {
            width: 100vw;
            height: 100vh;
            font-size: 2em;
        }
    </style>
</head>
<body>
<div>
    <textarea name="text" id="text">{{ text }}</textarea>
</div>
<script>
    let a = document.getElementById('text')
    a.onkeydown = (e) =>{
        if(e.key==='Tab'){
            a.value = a.value+'\t'
            e.preventDefault()
        }
    }
</script>
</body>
</html>